Hi, It basically depends on your requirements, if you want a process centric framework, or if you want a deep integration with a rules engine plus complex event processing capabilities (90% of the time complex scenarios need these features).
That's my two cents opinion.
I agree with Maurico that each has it's advantages. I also agree that a large percentage has something like event processing. How large the percentage is that needs complex event processing (emphasis on complex) is debatable.
A good article about process centric vs information centric is http://www.theenterprisearchitect.eu/archive/2010/01/13/the-process-centric-vs-information-centric-approach-to-soa.